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Type 4 Magnetic Alloy vs. ASTM A387 Grade 2 Steel

Type 4 magnetic alloy belongs to the nickel alloys classification, while ASTM A387 grade 2 steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is Type 4 magnetic alloy and the bottom bar is ASTM A387 grade 2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 2.0 to 40
25
Fatigue Strength, MPa 220 to 400
190 to 250
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 420 to 630
300 to 350
Tensile Strength: Ultimate (UTS), MPa 620 to 1100
470 to 550
Tensile Strength: Yield (Proof), MPa 270 to 1040
260 to 350

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 900
420
Melting Completion (Liquidus), °C 1420
1470
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 60
2.6
Density, g/cm3 8.8
7.9
Embodied Carbon, kg CO2/kg material 10
1.6
Embodied Energy, MJ/kg 140
20
Embodied Water, L/kg 210
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22 to 200
98 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 190 to 2840
180 to 320
Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 19 to 35
16 to 20
Strength to Weight: Bending, points 18 to 27
17 to 19
Thermal Shock Resistance, points 21 to 37
14 to 16

Alloy Composition

Carbon (C), % 0 to 0.050
0.050 to 0.21
Chromium (Cr), % 0 to 0.3
0.5 to 0.8
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 9.5 to 17.5
97.1 to 98.3
Manganese (Mn), % 0 to 0.8
0.55 to 0.8
Molybdenum (Mo), % 3.5 to 6.0
0.45 to 0.6
Nickel (Ni), % 79 to 82
0
Phosphorus (P), % 0 to 0.010
0 to 0.025
Silicon (Si), % 0 to 0.5
0.15 to 0.4
Sulfur (S), % 0 to 0.020
0 to 0.025

Comparable Variants